. >> i am tori campbell, thursday, october 4th. we begin with developing news on the morning commute. bart has been experiencing major system-wide delays to the past two hours. ktvu's alex savidge is live there with developments. >> reporter: good morning, yes, this was a stalled work vehicle that had triggered delays earlier on. but that problem has been taken care of. we did just get word from bart a couple of minutes ago that all of their trains this morning are now running on time. earlier on the delays were significant. show you video of what it looks like here with video. a bart spokesman told us they were experiencing 40 minute delays on two lines from the east bay into san francisco. that would be those lines. this was because of a maintenance vehicle blocking tracks early this morning south of the mcarthur station. now that vehicle has been cleared out of the way but trains were backed up. everything started about 4:30 this morning when that vehicle that rides actually on the bart tracks itself came off the tracks and the